<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>23软件一班_23003004_陈天濠_计算器</title>
    <link rel="stylesheet" href="./计算器.css">
</head>

<body>
    <div class="container">
        <form class="calculator" name="calc">
            <input type="text" readonly class="value" name="txt" />
            <span class="num clear" onclick="calc.txt.value = ''">c</span>
            <span class="num" onclick="document.calc.txt.value += '/'">/</span>
            <span class="num" onclick="document.calc.txt.value += '*'">*</span>
            <span class="num" onclick="document.calc.txt.value += '7'">7</span>
            <span class="num" onclick="document.calc.txt.value += '8'">8</span>
            <span class="num" onclick="document.calc.txt.value += '9'">9</span>
            <span class="num" onclick="document.calc.txt.value += '-'">-</span>
            <span class="num" onclick="document.calc.txt.value += '4'">4</span>
            <span class="num" onclick="document.calc.txt.value += '5'">5</span>
            <span class="num" onclick="document.calc.txt.value += '6'">6</span>
            <span class="num plus" onclick="document.calc.txt.value += '+'">+</span>
            <span class="num" onclick="document.calc.txt.value += '1'">1</span>
            <span class="num" onclick="document.calc.txt.value += '2'">2</span>
            <span class="num" onclick="document.calc.txt.value += '3'">3</span>
            <span class="num" onclick="document.calc.txt.value += '0'">0</span>
            <span class="num" onclick="document.calc.txt.value += '00'">00</span>
            <span class="num" onclick="document.calc.txt.value += '.'">.</span>
            <span class="num equal" onclick="document.calc.txt.value = eval(calc.txt.value)">=</span>
        </form>
    </div>
</body>

</html>